/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.catalina;

import org.apache.catalina.core.StandardServer;

/**
 * <p>
 * <strong>ServerFactory</strong> allows the registration of the (singleton)
 * <code>Server</code> instance for this JVM, so that it can be accessed
 * independently of any existing reference to the component hierarchy. This is
 * important for administration tools that are built around the internal
 * component implementation classes.
 * 
 * @author Craig R. McClanahan
 * @version $Id: ServerFactory.java 939350 2010-04-29 15:36:29Z kkolinko $
 */

public class ServerFactory {

	// ------------------------------------------------------- Static Variables

	/**
	 * The singleton <code>Server</code> instance for this JVM.
	 */
	private static Server server = null;

	// --------------------------------------------------------- Public Methods

	/**
	 * Return the singleton <code>Server</code> instance for this JVM.
	 */
	public static Server getServer() {
		if (server == null)
			server = new StandardServer();
		return (server);

	}

	/**
	 * Set the singleton <code>Server</code> instance for this JVM. This method
	 * must <strong>only</strong> be called from a constructor of the
	 * (singleton) <code>Server</code> instance that is created for this
	 * execution of Catalina.
	 * 
	 * @param theServer
	 *            The new singleton instance
	 */
	public static void setServer(Server theServer) {

		if (server == null)
			server = theServer;

	}

}
